.container{
    display:grid;
    grid-template-rows: repeat(3,1fr);
    grid-template-columns: repeat(3,1fr);
    border: 1px solid;
}

.item{
    grid-column: 2/span 2;
    grid-row: 2/span 2;
    border: 1px solid red;
    height: 100px;
}